Patents by Inventor H. Mikael Trogstam

H. Mikael Trogstam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bedding removal and refilling system for animal cages
    Patent number: 6394033
    Abstract: A system (18) for handling animal cages (10) includes a low noise tipping funnel (16) into which waste bedding from the cage is emptied for transporting to a dumpster (20). The tipping funnel includes a receiving funnel (110) which receives the waste bedding. An air duct is positioned adjacent three sides of an upper opening (114) to the receiving funnel. A suction fan (76) draws airborne particles of the waste bedding into the air duct through a housing (134) over the top of the air duct. The housing creates an air path which minimizes transfer of noise generated in the suction process. The waste bedding is transferred from the receiving funnel into a vacuum line by a rotating valve (202) having a plurality of vanes (211). As the valve rotates, two or more of the vanes separate the receiving funnel from the vacuum line, minimizing transfer of noise from the vacuum line out through the upper opening of the receiving funnel.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: May 28, 2002
    Assignee: Steris Inc.
    Inventors: H. Mikael Trogstam, K. Magnus Nilsson